What factors affect the thermal conductivity of thermal grease?

What factors affect the thermal conductivity of thermal grease?

Many electronic products are affected by high temperature during work, which directly leads to the rapid shortening of product service life, and even stops working directly after high temperature, but the existing cooling system can not meet the needs of work at all, until the emergence of thermal grease, which effectively solves the problem of heat dissipation. The problem also reflects the importance of thermal grease. Therefore, the thermal conductivity of thermal grease is very important. What factors will affect the thermal conductivity of thermal grease? Nuofeng will share with you the following.

  1. Oil separation rate
    Base glue generally refers to silicone oil, and filler refers to thermally conductive powder. If the compatibility of the two materials is poor, oil will appear after short-term storage. Well, with the extension of time, the thermal conductive silicone grease applied to the product still has the phenomenon of silicone oil dissociation in a short time. At high temperature, the remaining filler will become more and more dry, and the phenomenon of powder falling and cracking will appear, which will affect the thermal conductivity. Therefore, the user first understands the thermal grease oil separation rate parameter index.
  2. Viscosity
    Why the viscosity is also one of the reasons, because the viscosity is determined by the filler and the base material. If the filler content increases or decreases, it will affect the viscosity and also affect the thermal conductivity, but the viscosity cannot be used to judge the thermal conductivity. index of.
  3. Stickiness
    The stickiness here is not adhesiveness. We all know that thermal grease will not cure. Stickiness refers to adhesion. If the thermal grease produced has no stickiness and is too dry, it cannot be tightly If it is attached to the product and cannot be tightly attached to the product, how can the heat generated by the product work be quickly dispersed, so the thermally conductive silicone grease with poor viscosity is easy to separate from the product after use, which greatly reduces the thermal conductivity.
  1. Poor radiator effect
    Here I will introduce to you an application case solved by Nuofeng on site. The customer uses Nuofeng thermal grease and mobile phone cooling clip. The reason is that the working temperature of the product is high and the heat is dissipated. It is believed that there is a problem with the thermal conductivity of the thermal grease. CoolThermo After the sales engineer arrives at the site, it is recommended to replace the radiator, and it will be normal immediately, because each batch of Nuofeng products will undergo strict inspection and review, and they are confident that the performance of the product is stable, so the sales engineer arrives at the site and directly proposes to replace the radiator to solve this problem. , the radiator fails, and it is indirectly considered that the thermal grease is abnormal, so the ability of self-diagnosis and analysis is very important.

The factors that affect the thermal conductivity of thermal grease include the proficiency of employees, thixotropic properties, sizing thickness, etc. It is recommended that you visit the official website of Nuofeng Company, and there are detailed explanations about the knowledge of thermal grease, and CoolThermo will continue to We share our knowledge about adhesive products and adhesive solutions with you, and serve the electronics industry market and users in an all-round way.

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